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Thermoelectric Force of hot Carriers
Author(s) -
Pozhela J. K.,
Repshas K. K.
Publication year - 1968
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19680270233
Subject(s) - electric field , condensed matter physics , isotropy , electron , microwave , scattering , electric flux , electric susceptibility , relaxation (psychology) , field (mathematics) , physics , materials science , polarization density , optics , magnetic field , optical field , quantum mechanics , mathematics , psychology , social psychology , magnetization , pure mathematics
The thermo‐electric power of hot carriers U T due to a high electric field E is investigated. Two cases are considered: 1) weak electric field ( E ≦ 10 3 V/cm) and 2) high electric field ( E ≧ 10 3 V/cm). The theory is developed for both cases in the approximation of the isotropic mass and quasi‐elastic scattering. Dc pulse measurements on n‐type germanium in a weak electric field yield a quadratic dependence of U T on the electric field strength. The experimental results are found to be in a satisfactory agreement with theory. In high electric fields the microwave technique is used. It is concluded that the energy relaxation for high‐energy electrons in n‐Ge is determined mainly by acoustical modes.